Why writers get blocked (sometimes) – Annie Dillard QUOTES FOR WRITERS (and people who like quotes)

When you are stuck in a book; when you are well into writing it, and know what comes next, and yet cannot go on; when every morning for a week or a month you enter its room and turn your back on it; then the trouble is either of two things. Either the structure has forked, so the narrative, or the logic, has developed a hairline fracture that will shortly split it up the middle — or you are approaching a fatal mistake. What you had planned will not do. If you pursue your present course, the book will explode or collapse, and you do not know about it yet, quite.
Annie Dillard